Uni-Ball Brush Pen Pin Sepia Polyacetal tip. Plastic body . The brush felt is ideal for plans, layers, drafts, detailed drawings. You will obtain a fine and precise line, with a regular ink flow and deep and intense colours. Pigmented ink with high water resistance that makes it non-erasable once dry even if water is poured on the page, it also has high light resistance and its colour does not fade even when exposed to direct light. Stroke thickness: 0,3mm to 1,2mm Colour: Sepia Brand: Uni-Ball